Something I read on the internet the other day:
Rails is so old technology and it does not scale. It's days are numbered but until then, let's use mastodom for private social network, host our projects on github.com, use stripe for our payments, get funded on kickstarter, stream our videos on twitch.
You were being sarcastic , not sure why you're downvoted.
Yes, it's pretty ignorant to say you can't build stuff of scale with Rails, there are so many multi billion companies running on Rails it's getting ridiculous. Shopify is slowly becoming the size of Oracle in terms of market cap.
So the next argument is yes you can build it with Rails but why not choose something productive AND performant like (Go / Elixir / Kotlin / Crystal / Node etc etc).
I think you can build anything with anything nowadays. Rails is still one of the leading options, it's a productive, battle tested, mostly stable, well maintained and overall nice framework to build on. Can you build product X with something other than Rails? Yes you can. Does that mean X is definitely superior to Rails ? No it doesn't.
